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External contour air bearing

An air bearing and outer profile technology, which is applied in the field of bearings, can solve problems such as unfavorable speed increase and large quality, and achieve the effect of shortening length and improving power density

Pending Publication Date: 2020-11-20
科诺泰博(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the material is the same, the closed working wheel tends to have a larger mass, which is not conducive to increasing the speed and poses a greater challenge to the stability of the rotor

Method used

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Examples

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Embodiment 1

[0020] The present invention provides an outer profile air bearing, comprising an outer profile air bearing, the outer profile air bearing is applied to a closed type rotary fluid machine, and the outer surface of the working wheel cover of the closed type fluid machine is designed as a wheel cover The combination of the outer cylindrical surface 1 and the outer conical surface 3 of the wheel cover, such as figure 1 shown.

[0021] Further, when the outer contour air bearing is used as the outer contour radial air bearing 10, when the outer contour air bearing is used as the outer contour radial air bearing, it is installed on the outer cylinder of the wheel cover of the closed working wheel Face 1, the closed working wheel adopts turbine and / or compressor wheel.

[0022] Further, when the outer profile air bearing is used as the outer profile thrust air bearing 11, it can be installed on the back side of the turbine wheel 2 or the outer conical surface 3 of the compressor wh...

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PUM

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Abstract

The invention discloses an external contour air bearing. The external contour air bearing comprises an external contour air bearing body. The external contour air bearing body is applied to a closed type rotating fluid machine. The outer surface of a wheel cover of a running wheel of the closed type rotating fluid machine is designed as combination of a wheel cover outer cylindrical surface and awheel cover outer conical surface. According to the external contour air bearing, the shape of the outer surface of the wheel cover of the running wheel of the closed type rotating fluid machine is slightly modified to become an air bearing mounting surface. The surface of the running wheel can be made full of as a mounting surface of a radial air bearing and a thrust air bearing. Traditional layout that the bearing is located on a rotor shaft is changed. The length of a short shaft can be substantially reduced. Meanwhile, by shortening a rotor and properly increasing the relative span of thebearing, the additional load of the bearing can be reduced, and the rotational speed of the bearing can be increased.

Description

technical field [0001] The invention relates to the field of bearings, in particular to an outer profile air bearing. Background technique [0002] Air bearings use gas as a lubricant, there is no mechanical contact in the bearing, and there is almost no wear, thus ensuring higher rotation accuracy and higher speed, and high temperature resistance, no pollution, long life, widely used in various rotation mechanical. [0003] The main components of high-speed rotating machinery are rotors, stators, bearings, etc., and the mass of the rotors of one type of rotating machinery is concentrated at both ends of the rotor, such as turbochargers, turbine generators, double-balanced rotor dynamic balancing machines, etc. Its bearings are usually set in the middle of the rotor. In rotary fluid machines represented by turbochargers, in order to facilitate the arrangement of bearings and sealing structures, the rotor shaft is usually long, and the mass of the rotor is concentrated on t...

Claims

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Application Information

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IPC IPC(8): F01D25/22F04D29/057F16C17/12
CPCF01D25/22F04D29/057F16C17/12F16C17/102F16C2360/24
Inventor 黄若郭文杰高泽黄仕豪
Owner 科诺泰博(北京)科技有限公司
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